Moving-picture machine.



J. GRANT.

MOVING PICTURE MACHINE.

APPLICATION FJLED SEPT. 9. 1913. 1,225,801. Patented May15,1917.

3 SHEETS-SHEET I 1. GRANT.

MOVING PICTURE MACHINE.

APPLICATION FILED SEPT. 9- l9l3.

1,225,801". Patented May15, 1917.

3 SHEETS-SHEET 2k.

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MOVING PICTURE MACHINE.

APPLlcAloN FILED SEPT: 9, Isla;

Patented May 15, 1917-.

3 SHEETS-SHEET 3.

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JOI-IN GRANT, F CHIGAG'D, ILLINOIS.

MOVING-PCTURE MACHINE.

Application filed September 9, 1913,

To @ZZ coito/m t may concern.'

Be it known that l, JOHN GRANT, a citizen of .the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improafements in Moving-Picture Machines, of which the following is a specification.

This invention relates to improvements in moving pictu-re machines and has for its object .to provide an improved form of machine in which danger of combustion of the film is practically eliminated.

The object of my invention is to provide an improved 4fire shutter which will automatically :open when the is lbeing driven and which will automaticaliy close when the same is stopped. It is often :the case that a lilm ignites from the heat of projeoted light rays, owing-to :the ,operator having neglected to close the lire shutter, and toovercome this objection have .devised my improved ire shutter and operating means.

I obtain these and other results by the structure described and shown in the following specification and accompanying drawings, in which;

Figure l is a side elevation of a machine embodying my invention;

Fig. 2 is a front .elevation of the same;

Fig. 3 is La ycross section along the line 5 of Fig. 2;

Fig. 4 is Aa horizontal section along the line .6 6 .of Fig. 3;

Fig. 5 is a perspective detail 4of the operating handle;

Fig. 6 is a similar detail of the operating crank end;

Fig. 7 is a detail ofthe spring member;

Fig. 8 isa detail of the lire shutter operating lever.

Like characters refer .to like elements throughout the drawings, in which;

l0 indicates the usual vform of casing having the supporting legs ,or pedestal 1l adapted to be bolted `or lotherwise secured to a table or the like. 'This casing l0 is provided with the front wall 19. having the usual light open-ing or aperture 13 therein. The shaft 24 extends 4through the lcasing ll, as .clearly Ashown in Fig. 4,'and is adapted to be engaged at its outer extremity by an operating handle, vas will ,be kdescribed hereinafter. A protecting and guidi-ng plate 25 Specification of Letters Patent.

Patented May 1,5, 1.917.

serial no. 788,857.

is provided in front of and spaced from the wall l2 of the casing 10, this plate or apron 25 being' outwardlyturned at its upper por.- tion, as indicated, at 25 forming a. guiding means for the film 17. The plate or apron 9.5 l1s pro-vided with the arms 25D pivotally mounted at their outer extremities to the casing l0, as indicated by numeral 25C, whereby the entire plate may be pivoted out ,of position sho-wn. The plate is formed with the tab or lug l5d projecting outwardly at one side therefrom and the lthumb screw 2G is mounted on the front wall 12 of the casing l() to engage the tab 25d whenit is desired to .hold the plate 25 in position. The casing 39. normally covers the members .of the Geneva movement, kas indicated in Fig. l, so that the same may be run in oil if so desired. rllhe shaft 29 Ycarries at its other extremity the pinion 33 which is driven by the gear '34 mounted upon the shaft 35 which in turn carries the smaller pinion 3,6 driven from the main driving gear 23. A. fly-wheel 37 is carried at `one Aevtremity of the shaft 29 outwardly ofthe pinion 33 and serves lto accomplish the usual function of such an element in maintaining the speed of rotation approximately constant. Intermediate of the pinion 33 and igiy-whcel 37 .is a sprocket 38 serving to drive a chain 39 which also passes around the smaller sprocket 40 mounted on a shaft 40a (see Fig. l). Located below the shaft 29 a considerable distance, is .the roller 41 lpivotally mounted upon the shaft 42 which projects angularly from the lever or arm 43. The Cotter-pin or the like .44 serres to prevent side movement in one direction of the roller 4l, the shaft 42 being enlarged at 42a to form a shoulder to prevent lateral movement of the roller 4l inthe other direction.

rlfhe casing l0 is provided with the outwardly extending portion 10iL below the Geneva movement and a bolt or stud 46 yprojects therefrom being carryin-g a nut at 461?, .as clearly shown in Fig. 2. The arm lever 43 is .provided with the slotted portion 43a intermediate its eX- tremities, this slotted portion being slightly curved to conform to the circular movement of the arm 43, the bolt 46 Lextending through the slotted .portion 43a. A collar .or washer 47 is maintained in close contact with one side of the :arm 43 adjacent the slot 43a by means of the spring 48 coiled around the headed at 46a in i bolt 46 and extending between the head 46a' and the said washer 4T. rIhe frictional contact between the washer 47 and the side of the arm 43 will serve to maintain the latter in adjusted position with respect to the casing 10 as will be apparent. The arm 48 terminates in the handle portion 43c and it is apparent that engagement of the latter to move the arm 43 about its pivotal mounting at 44 will serve to raise or lower the roller 41 for the purpose to be hereinafter described. A spring 68 extends between the pivotal mounting 67 and the arm 66 serves to maintain the. roller 64 in yieldable engagement with the sprocket 68.

The plate or apron 25 is provided with the outwardly extending lugs 25h above the opening 25e and a rod 25j passes therebetween. and is pivotally mounted therein. Secured to this rod between the lugs 25ll is the fire shutter 90 adapted to close the opening 13 to prevent ignition of the film by the heat or light rays should the same be standing still during non-operation. The rod 25j is extended outwardly at one side and is bent upwardly at 25k and then outwardly at right angles thereto, as indicated by nu-A meral 25m.

The shaft 24 extends outwardly through one side of the casing 10 through the bearing portion 10b. Outwardly thereof a collar 24a is secured to the shaft by a pin 24b or the like. This collar is recessed at 24c around the shaft 24 and a coil spring 91 is located therearound having the bent end 91L fixed to the collar 24a as shown in Fig. 4. The handle 92 is provided with the hub portion 92a adapted to be fitted over the end of the shaft 24, as described below. The shaft 24 is provided with the pin 93 extending transversely therethrough outwardly of the collar 24a. The hub 92L of the handle is centrally apertured at 92b to lit over the shaft 24 and is transversely slotted, as indicated by numeral 922, the slots being constructed to slightly converge toward the center of the hub portion, as clearlyy shown in Fig. 5. The hub portion is further provided with a small hole 92r1 adapted to engage the other bent end 91d of the spring 91 when in assembled position. At its outer periphery the hub portion 92EL is grooved, as indicated by numeral 92e and a spring member 94, (see Fig. 7 provided with the curved portion 94a with the bent end 94b is adapted to be located in the groove, as shown in Figs. 3 and 5, with its bent end 94b extending into slotted portion 92C. A collar 95 is slidably mounted upon the hub portion 92L of the handle 92, as shown in Figs. 3 and 4 over the spring member 94. Secured to this collar to rotate therewith, is the looped portion 96a of the lever 96, which is slightly curved or flared at its outer extremity. This lever is adapted to coact with the angularly bent portion 25m of rod 25J', as will be hereinafter described. The operation of the same is follows:-

After the handle 92, together with the collar 95 has been slipped over the rod 24, in which position it may be secured by a screw or the like, threaded into the end of the said shaft, the transverse pin 93 will lit in the slotted portion 92c of handle 92, as clearly shown in Fig. 3. Upon rotation of the handle the shaft 24 will be rotated to operate the film. Simultaneously the hub portion 92a of the handle will operate, when rotated in the direction of the arrows, (see Fig. 3) to press the bent end 94b of the spring 94 against the transverse pin 93, thereby serving to press the bent portion 94a of the spring outwardly to frictionally engage the collar 95. This frictional engagement is such as to cause the collar 95 to rotate with the handle 92. At the same time the lever 96 will move upwardly with the collar until it strikes the portion 25ul of the rod which it will carry upwardly to position shown in Fig. 3 at the same time raising the fire shutter to the position shown therein. The fire shutter 90 will be maintained in open position so long as the handle is rotated and the machine operated, owing to the frictional contact described. As soon as the handle is stopped, however, so that the film stops, the collar 95 will slip relative to the hub portion 92'1L owing to the weight of the raised lever arm 96, which will fall back to permit the fire shutter to close until the machine is again in operation, thereby protecting the film from the concentrated heat and light rays while it is standing still.

It will be apparent from the above that I have provided a construction which will attain the results set forth in the preamble to this specification.

Vhile I have shown and described a speciic embodiment of my invention, I do not wish to be restricted to such showing and description beyond the scope of the appended claims..

What I claim is 1. In a device of the class described having an opening, a shutter for said opening, said shutter having an arm, means to drive a film or the like, said means comprising a shaft, a hub member adapted to be mounted upon and engage said shaft, a lever having a portion mounted to slip upon said hub portion, means associated with said hub to rotate the same together with said shaft and means to frictionally engage said lever with said hub upon rotation thereof, whereby said lever will be actuated to coact with said shutter arm and thereby open said shutf ter and maintain the same in open position during the operation of said driving means.

2. In a device of the class described, a

fire shutter, a rotatable shaft, a pin or the like carried by said shaft, a hub member mounted on said shaft and engaging said pin, a collar loosely mounted 0n said hub and operatively associated with said shutter, and a friction-producing means having a portion interposed between said hub and pin and operable upon rotation of said shaft by said hub to engage said collar and rotate the same to open said shutter.

3. In a device of the class described, a lire shutter, a rotatable shaft, a pin or the like carried byI said shaft, an operating handle having a hub split to engage said pin and fitting around said shaft, a collar loosely fitting around said hub, means carried by said collar to operate said shutter, and a friction-producing member havlng a portion partially fitting between said hub and collar and a portion iittingbetween said hub and said pin, said member being arranged and constructed so that proper rotation of said handle will effect frictional engagement between said collar and hub t0 open said shutter.

In testimony whereof, I have subscribed my name.

JOHN GRANT.

Witnesses:

HENRY A. PARKS, HELEN FREUND.

Copies of this patent may be obtained for lve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

